Spinning compartment lock lid



March 13, 1951 P. E; spams-r1- 2,544,786

' SPINNING COMPARTMENT LOCK LID Filed Feb. 23, 1949 INVENTOR- FETZ PAUL E. GARRETT Patented Mar. 13, 1951 r UNITED STATES PAT ENT O F F 1 CE SPINNING COMPARTMENT LOCK LID Paul E. Garrett, Parkersburg, W. -Va., assignor to American Viscose Corporation, Wilmington, DeL, a corporation'of Delaware Application February 23, 1949, Serial No. 77,953

6 Claims. 1

r This inventionrelates to apparatus used in the mot spinning of artificial filamentary material and. particularly to a closure for a spinning buck- =et compartment. I

.In conventional pot spinning processes, the formation of crystalline materials orother solids formed by the crystallization of soluble components of the liquid materials carried into the spinning compartment by the filamentary material collected therein is prevented by spraying water or other solvent into the compartment. Regardless of the manner in which the liquid 'is supplied to the compartment, the rapidly moving-surface of the bucket and other parts -con .nected therewith, and the air currents resulting from-such rotation, whip the sprayed materials o: any air-suspendable matter about the compartment in an uncontrollable manner. A certain portion of such materials are unavoidably directed into the aperture provided for a spinning funnel stem through the spinning bucket cover. Reduction of the pressure of the atmos phere within the bucket by centrifugal action increases the tendency for material to be drawn into the bucket through the aperture. Moreover, any liquid which is splashed on the stem of the funnel is promptly drained into the interior of thebucket.

Itisan object of the present invention to prevent the-introduction of unwantedsolid or liquid materials into the interior of a spinning bucket *ifrom areeion exterior thereto to thus avoid contam-mating the filamentary product and altering its physical and dyeing properties. .A further object is to provide apparatus of simple con struction which may be readily applied to conventional equipment without appreciable ex- .pense. Other objects, features and advantages cf the invention will be apparent from the following description of the invention and the accompanying-drawings in which Fig. l is a bottom view of .a spinning bucket compartment closure according to the invention; and

Fig. 2 is a view partially in section illustrating elements of a spinning bucket compartment and v the closure of Fig. .1 sectioned along line II--II. Briefly, the invention comprises a lid or a cover for the spinning compartment or nest provided with a flange extending axially from its under surface into close proximity to the surface of a spinning bucket cover to hinder or prevent parti'cles or droplets suspended within the compartmen't from entering the bucket through the central aperture of the bucket cover especially by wayof the funnelstem-exterior. I Fig. .1 illustrates an annular spinning compartvmentcover 4 having as a principal feature .of the invention an annular flange 5 extending downwardly from the lower surface 7 of the cover.

2 The flange 5 may be, but 'is not necessarily, con centric as shown with respect to an aperture 9 through which the stem IQ of a'spinning funnel extends during operation o'f'the spinning equipment. The length as measured in an axial direction of the flange 5 depends upon the distance between the under surface of the compartment cover and the top surface of the spinning uck'et cover. In order to efficiently prevent th entering of unwanted materials that originate within the compartment into the spinning box, the flange is preferably extended to within a half inch of the top surface of th bucket cover [2.

When the flange has an inner diameter of approximately three inches and its lower edge 'extends within a half inch of'thebucket cover 12, it is practically impossible for "air susp'ended material to directly reach the aperture H of the "spinning box cover or the surface of the funnel stem Ill. The outer diameter "of the portion of the flange '5 nearest the bucket cover 12 is such that it entirely encompasses the central aperture of "the bucket cover; the largest outer diameter permitted should be slightly less than the inside diameter of the rim of the bucket, i. e.,"a diameter which permits safe clearance between the bucket and the flange'during operation. As shown in Fig. 2, the flange 5 extends approximately to the upper plane of the bucket riin'when the bucket "is recessed to receive a cover below the end surface of the rim. Preferably, the flange should extend below the level of the top edge of the bucket rim.

A liquid may be introduced into the compartment by a means such as the spray nozzle It shown in Fig. 2. The droplets of liquid "come into contact with the rotating bucket surface and the turbulent atmosphere of the compartment. A portion of the spray during erratic and violent movement falls upon the outer surface 14 of the flange and drains in the manner shown to the surface of the bucket cover. It is centrifugally forced by rotation of the bucket to a region radiall-y beyond the bucket periphery. The flange 5 in this manner actually promotes the collecting ofliqu'id and the depositing of it on the surface of the adjacent bucket cover. The increased amount of liquid received by the bucket :co'ver appreciablyincrea-ses the cleansing of the bucket cover and portions of the rim of the bucket of soluble materials ejected from the filamentary material within the bucket.

The cover 4 may be constructed according to conventional stamping 'or molding procedures. If desired, the flange 5 may extend from the cover in a direction normal to its under side to facilitate the forming thereof. Such covers may 'con 'sist of a corrosion-resistant metal, or a thermoplastic or thermosetting resin which is resistant to the acids and other materials associated with the lock-lid or cover 4, depressions 6 are molded 7 into the cover 4 and have extended walls 8 which form pockets (or protrusions when viewed externally which overlap the edge of th aperture) into which the fingers may be inserted to manually manipulate the lid through th small angle of rotation required when looking it into or removing it from the aperture in the top wall El of the compartment. The periphery of the aperture is appropriately notched along diametrically opposite portions to permit insertion of the cover until the periphery is engaged by the radially extending rim or flange [8. An annular flange 3 extending parallel with the axis of the cover from the outer marginal section of its lower S111:-

face may be provided to position the cover within the aperture of the compartment as Well as to provide desirable reinforcement of the cover, especially when the cover is molded in thin sections.

While a preferred embodiment of the invention has been shown, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. In a spinning compartment having an opening for access to a spinning bucket and a cover for the bucket supported within the compartment, said opening being spaced from the bucket in a direction along its axis of rotation nearest the end thereof which supports the cover, a closure for the opening, said closure and the cover each having an aperture of suiiicient size to permit the extension and movement of a reciprocable strand guide through the apertures, a barrier for preventing gas-suspended particles and droplets from entering the region between the apertures comprising a flange extending from a portion of the surface of the closure which faces the cover and surrounds the closure aperture into close proximity with a portion of the surface of the cover which faces the closure and surrounds the cover aperture, the radially outward surface of the flange which is close to the cover being substantially radially inward of the cover periphery.

2. In a spinning compartment having an opening for access to a spinning bucket and a cover for the bucket supported within the compartment, said opening being spaced from the bucket in a direction along its axis of rotation nearest the end thereof which supports the cover, a closure for the opening, said closure and the cover each having an aperture of sufficient size to permit the extension and movement of a reciprocable strand guide through the apertures, a barrier for preventing gas-suspended particles of liquid and solid from entering the region between the apertures comprising an annular walled member extending from an annular portion of the closure surface facing and concentric with the cover into close proximity with an annular coaxial surface portion of the cover facing the closure, said surface portion of the cover being substantially smaller in diameter than the periphery of the cover.

3. In a spinning compartment having an opening for access to a spinning bucket and a cover for the bucket supported within the compartment, said opening being spaced from the bucket in a direction along its axis of rotation nearest the end thereof which supports the cover, a closure for the opening, said closure and the cover each having an aperture of sufficient size to permit the extension and movement of a reciprocable strand guide through the apertures, an ani ameter than the periphery of the cover.

4. Spinning apparatus comprising a compartment, a spinning bucket within the compartment, a cover for the bucket, an opening through the compartment wall spaced from the bucket in -a direction along its axis of rotation nearest the end thereof which supports the cover, a closure for the compartment opening, a funnel guide having an elongate stem extending lengthwise 0f the spinning bucket axis, means for reciprocating the guide along its axis, apertures through the closure and the cover of sufficient size to permit extension and movement of the guid stem through the apertures, liquid distributing means supported Within the compartment, a flange extending coaxially from the surface of the closure which faces the cover into close clearance with a coaxial annular surface of the cover whichis substantially smaller than the periphery of the cover.

5. In a spinning compartment having an opening for access to the spinning bucket and a cover for the bucket supported within the compartment, said opening being spaced from the bucket in a direction along its axis of rotation nearest the end thereof which supports the cover, said bucket having a recessed rim section to receive the cover internally of the end-surface of the bucket, a closure for the opening, said closure and the cover each having an aperture of sulficicnt size to permit extension and movement of a reciprocable strand guide through the apertures, an annular flange constituting a barrier for preventing gas-suspended articles of liquid and solid from entering the region between the apertures, said flange extending coaxially from the surface of the closure facing the cover approximately to the plane of the end surface of the bucket, the radially outward surfaces of the portion of the flange adjacent the bucket having a smaller diameter than the periphery of the cover.

6. In a spinning compartment having an opening for access to the spinning bucket and a cover 'for the bucket supported within the compartment, said opening being spaced from the bucket in a direction along its axis of rotation nearest the end thereof which supports the coverf said bucket having a recessed rim section to receive the cover internally of the end-surface of the bucket, a closure for the opening, said closure and the cover each having an aperture of sufficient size to permit extension and movement of a reciprocable strand guide through the apertures, an annular flange constituting a barrier for preventing gas-suspended articles of liquid and solid from entering the region between the apertures, said flange extending coaxially from the surface of the closure facing the aperture to a plane in close proximity to, and parallel with, a portion of the surface of the cover which faces the'closure, said plane being sfiaced inwardly of the endsurface of the bucket, the radially outward surface of the portion of the flange nearest the bucket having a smaller diameter than the periphery of the cover.

PAUL E. GARRETT.

REFERENCES CITED The following references are of record in the file of this patent:

Number 6 UNITED STATES PATENTS Name Date Schrenk May 20, 1941 Hartley Jan, 4, 1949 Thompson Jan. 18, 1949 Haley Oct. 18, 1949 

